List of Oenothera species

Subdivisions of the genus Oenothera in the Onagraceae (evening primrose) family :^[1][2][3]

Section Anogra

Oenothera sect. Angora (Spach) W.L.Wagner & Hoch 2007 – western North America in dry, sandy soils in deserts, grasslands, and forest openings, up to 2000 m. elevation.^[2]

• Oenothera arizonica (Munz) W.L.Wagner 1998 – California evening primrose (Arizona & Mexico)^[4]

• Oenothera californica (S.Watson) S.Watson 1876 – California evening primrose
  • O. californica ssp. avita W.M.Klein 1962
  • O. californica ssp. californica
  • O. californica ssp. eurekensis (Munz & J.C.Roos) W.M.Klein 1962 – Eureka Dunes evening primrose

• Oenothera deltoides Torr. & Frém. 1845 – birdcage evening primrose
  • O. deltoides ssp. ambigua (Munz) W.M.Klein 1962
  • O. deltoides ssp. cognata (Jeps.) W.M.Klein 1962
  • O. deltoides ssp. deltoides
  • O. deltoides ssp. howellii (Munz) W.M.Klein 1962 - Antioch Dunes evening primrose
  • O. deltoides ssp. piperi (Munz) W.M.Klein 1962

• Oenothera engelmannii (Small) Munz 1931 – Engelmann's evening primrose (south-central U.S.)^[5]

• Oenothera neomexicana (Small) Munz 1931 – New Mexico evening primrose (Arizona, New Mexico)^[6]

• Oenothera nuttallii Sweet 1830 – Nuttall's evening primrose (central North America)^[7]

• Oenothera pallida Lindl. 1828 – pale evening primrose, white buttercup (western North America)^[8]
  • O. pallida ssp. gypsophila (Eastw.) Munz & W.M.Klein 1965 – whitepole evening primrose^[9]
  • O. pallida ssp. pallida
  • O. pallida ssp. runcinata (Engelm.) Munz & W.M.Klein 1965
  • O. pallida ssp. trichocalyx (Nutt.) Munz & W.M.Klein 1965

• Oenothera wigginsii W.M.Klein 1962 – (Baja California in Mexico)^[10]

Section Calylophus

Oenothera sect. Calylophus (Spach) W. L. Wagner & Hoch 2007 – in North American Great Plains and south to central Mexico.

subsect. Calylophus

• Oenothera berlandieri (Spach) Steud. 1843 – Mexican evening primrose^[11]
  • O. berlandieri ssp. berlandieri
  • O. berlandieri ssp. pinifolia (Engelm.) W. L. Wagner & Hoch 2007

• Oenothera serrulata Nutt. 1818 – yellow sundrops^[12]

subsect. Salpingia

• Oenothera hartwegii Benth. 1839 – Hartweg's sundrops^[13]
  • O. hartwegii ssp. fendleri (A.Gray) W.L.Wagner & Hoch 2007
  • O. hartwegii ssp. filifolia (Eastw.) W.L.Wagner & Hoch 2007
  • O. hartwegii ssp. hartwegii
  • O. hartwegii ssp. maccartii (Shinners) W.L.Wagner & Hoch 2007
  • O. hartwegii ssp. pubescens (A.Gray) W.L.Wagner & Hoch 2007

• Oenothera lavandulifolia Torr. & A.Gray 1840 – lavenderleaf sundrops^[14]

• Oenothera toumeyi (A.Gray) Tidestr. 1935 – Toumey's sundrops^[15]

• Oenothera tubicula A.Gray 1852 – Texas sundrops^[16]
  • O. tubicula ssp. strigulosa (Towner) W.L.Wagner & Hoch 2007
  • O. tubicula ssp. tubicula

Section Contortae

Oenothera sect. Contortae W.L.Wagner 1987 – Sierra Nevadas of California, extending just into western Nevada.^[17]

• Oenothera xylocarpa Coville 1893 – woodyfruit evening primrose^[2]

Section Eremia

Oenothera sect. Eremia W.L.Wagner 1986 – western North America, with a distribution in the Chihuahuan, Mojave, and Sonoran deserts.^[18]

• Oenothera primiveris A.Gray 1853 – desert evening primrose
  • O. primiveris ssp. bufonis (M.E. Jones) Munz 1965 – large yellow desert primrose^[19]
  • O. primiveris ssp. primiveris

Section Gaura

Oenothera sect. Gaura (L.) W.L.Wagner & Hoch 2007 – beeblossom (includes most of the taxa formerly placed in genus Gaura)^[20][21]

subsect. Campogaura

• Oenothera boquillensis (P.H.Raven & D.P.Greg.) W.L.Wagner & Hoch 2007 – Rio Grande beeblossom (Texas & Mexico)

• Oenothera suffrutescens (Ser.) W.L.Wagner & Hoch 2007 – scarlet beeblossom (western North America)

subsect. Gaura

• Oenothera coloradensis (Rydb.) W.L.Wagner & Hoch 2007 (Nebraska, Wyoming, Colorado, New Mexico)
  • O. coloradensis ssp. coloradensis – Colorado beeblossom or butterfly plant
  • O. coloradensis ssp. neomexicana (Wooton) W.L.Wagner & Hoch 2007 – New Mexico beeblossom

• Oenothera demareei (P.H.Raven & D.P.Greg.) W.L.Wagner & Hoch 2007 – Demaree's beeblossom

• Oenothera filiformis (Small) W.L.Wagner & Hoch 2007 – biennial gaura^[22]

• Oenothera gaura W.L.Wagner & Hoch 2007 – (eastern North America, from Ontario to South Carolina and Minnesota to Missouri)

• Oenothera hexandra (Ortega) W.L.Wagner & Hoch 2007
  • O. hexandra ssp. gracilis (Wooton & Standl.) W.L.Wagner & Hoch 2007
  • O. hexandra ssp. hexandra

• Oenothera lindheimeri (Engelm. & A.Gray) W.L.Wagner & Hoch 2007

• Oenothera patriciae W.L.Wagner & Hoch 2007^[3]

• Oenothera simulans (Small) W.L.Wagner & Hoch 2007^[3]

• Oenothera suffulta (Engelmann) W.L.Wagner & Hoch 2007^[3]
  • O. suffulta ssp. suffulta
  • O. suffulta ssp. nealleyi (J. M. Coulter) W.L.Wagner & Hoch 2007

• Oenothera triangulata (Buckley) W.L.Wagner & Hoch 2007^[3]

subsect. Gauridium

• Oenothera anomala Curtis 1797 – anomalous Oenothera (Mexico)^[2][3]

subsect. Schizocarya

• Oenothera curtiflora W.L.Wagner & Hoch 2007 – lizard tail (North America)^[23]

subsect. Stenosiphon

• Oenothera glaucifolia W.L.Wagner & Hoch 2007 – false gaura (southern Great Plains of central North America)^[3]

subsect. Stipogaura

• Oenothera calcicola (P.H.Raven & D.P.Gregory) W.L.Wagner & Hoch 2007

• Oenothera cinerea (Wooton & Standl.) W.L.Wagner & Hoch 2007 – gaura-pilosa^[24]
  • O. cinerea ssp. cinerea
  • O. cinerea ssp. parksii (Munz) W.L.Wagner & Hoch 2007

• Oenothera filipes (Spach) W.L.Wagner & Hoch 2007

• Oenothera mckelveyae (Munz) W.L.Wagner & Hoch 2007

• Oenothera sinuosa W.L.Wagner & Hoch 2007 – wavy-leaf gaura^[25]

subsect. Xenogaura

• Oenothera xenogaura W.L.Wagner & Hoch 2007 – (southern North America)^[2]

subsect. Xerogaura

• Oenothera arida W.L.Wagner & Hoch 2007 – (Texas, Mexico)^[2]

Section Gauropsis

Oenothera sect. Gauropsis (Torrey & Frémont) W.L.Wagner 1985 – Wyoming, western Nebraska, eastern Colorado, New Mexico, Kansas and the Texas Panhandle in the U.S. High Plains.^[26]

• Oenothera canescens Torr. & Frém. 1845 – spotted evening primrose^[27]

Section Hartmannia

Oenothera sect. Hartmannia (Spach) W. L. Wagner & Hoch 2007 – Generally in Mexico, Arizona, and Texas. But O. speciosa extends into the U.S. Central Plains, and O. rosea extends to the Caribbean, and northern South America.^[28]

• Oenothera deserticola (Loes.) Munz 1932 – (Mexico)^[29]

• Oenothera platanorum P.H.Raven & D.R.Parn. 1970 – Fort Huachuca evening primrose^[30]

• Oenothera rosea L’Hér. ex Aiton 1789 – pink evening primrose, Rose of Mexico

• Oenothera speciosa Nutt. 1821 – showy evening primrose, Mexican primrose, amapola

• Oenothera texensis P.H.Raven & D.R.Parn. 1970 – Texas evening primrose^[31]

Section Kleinia

Oenothera sect. Kleinia Munz 1965 – distributed over the Chihuahuan, Sonoran, and southern portions of the Great Basin deserts to the Great Plains, from southern Utah to southeastern Montana and western North Dakota, and northern Mexico.^[32]

• Oenothera albicaulis Pursh 1813 – prairie evening-primrose^[33]

• Oenothera coronopifolia Torr. & A.Gray 1840^[34]

Section Kneiffia

Oenothera sect. Kneiffia (Spach) Straley 1978 – eastern North America, at elevations up to 1900 m.^[35]

• Oenothera fruticosa L. 1753 – narrow-leaved or southern sundrops (eastern North America)^[36]
  • O. fruticosa ssp. fruticosa – (more southern distribution)
  • O. fruticosa ssp. glauca (Michx.) Straley 1978 – (more northern distribution)

• Oenothera perennis L. 1759 – little evening primrose, perennial sundrops (North America)^[37][38]

• Oenothera pilosella Raf. 1820 – prairie sundrops, meadow evening primrose^[39][40]
  • O. pilosella ssp. pilosella – (eastern North America)
  • O. pilosella ssp. sessilis (Pennell) Straley 1978 – (AR, LA, TX)

• Oenothera riparia Nutt. 1818 – riverbank sundrops^[3][41][42]

• Oenothera spachiana Torr. & A.Gray 1840 – Spach's evening-primrose (Alabama, Arkansas, Louisiana, Mississippi, Oklahoma, Texas)^[43]

Section Lavauxia

Oenothera sect. Lavauxia (Spach) W. L. Wagner & Hoch 2007 – North and South America.

subsect. Australis

• Oenothera acaulis Cav. 1898 − (Chile)^[44]

• Oenothera centaurifolia (Spach) Steud. 1841 − (Uruguay, Brazil, Argentina)^[45][46]

subsect. Lavauxia

• Oenothera acutissima W.L.Wagner 1981 – Flaming Gorge evening primrose (Utah, Colorado)^[47]

• Oenothera flava (A. Nelson) Garrett 1927 – yellow evening primrose (west & central North America)^[48]
  • O. flava ssp. flava
  • O. flava ssp. taraxacoides (Woot. & Standl.) W.L.Wagner 1986

• Oenothera triloba Nutt. 1821 – stemless evening primrose (North America)^[49]

Section Leucocoryne

Oenothera sect. Leucocoryne W.L.Wagner & Hoch 2007 – from southern Texas, through northern Mexico to the Trans-Volcanic Belt of central Mexico, southward to Guatemala, Nicaragua, and Costa Rica.^[2]

• Oenothera dissecta A. Gray ex S. Wats. 1885 - (Chihuahuan Desert)^[50]

• Oenothera kunthiana Munz 1932 - (southern Texas to Cost Rica)^[51]

• Oenothera luciae-julianiae W.L.Wagner 2004 - (Mexico)

• Oenothera orizabae W.L.Wagner 2004 - (Mexico)

• Oenothera tetraptera Cav. 1796 - (Mexico, southern Texas)^[52]

Section Megapterium

Oenothera sect. Megapterium (Spach) W.L.Wagner & Hoch 2007 – distributed in south-central North America.

• Oenothera brachycarpa A.Gray 1852 – short-fruit evening primrose (Arizona, Kansas, New Mexico, Nevada, Texas)^[53]

• Oenothera howardii (A. Nelson) W.L.Wagner 1983 – Howard's evening primrose (Colorado, Kansas, Nevada, Utah, Wyoming)^[54]

• Oenothera macrocarpa Nutt. 1813 – Missouri or big-fruit evening primrose^[55][56]
  • O. macrocarpa ssp. fremontii (S.Watson) W.L.Wagner 1983 – Fremont's evening primrose (Kansas, Nebraska)
  • O. macrocarpa ssp. incana (A.Gray) W.L.Wagner 1983 – big-fruit evening primrose (Kansas, Oklahoma, Texas)
  • O. macrocarpa ssp. macrocarpa – big-fruit evening primrose (Arkansas, Illinois, Kansas, Missouri, Oklahoma, Colorado, Tennessee, Texas)
  • O. macrocarpa ssp. mexicana W.L.Wagner 2007 – (Mexico)
  • O. macrocarpa ssp. oklahomensis (J.B.S.Norton) W.L.Wagner 1983 – Oklahoma evening primrose (Kansas, Oklahoma, Texas)

Section Oenothera

Oenothera sect. Oenothera – distributed from Canada to Panama.^[57]

subsect. Candela

• Oenothera clelandii W.Dietr. P.H. Raven & W.L.Wagner 1983 – Cleland's evening primrose^[58]
• Oenothera curtissii Small 1913 – Curtiss' evening primrose (Alabama, Florida, Georgia, Mississippi, South Carolina)
• Oenothera heterophylla Spach 1836 – variable-leaf evening primrose^[59]
  • O. heterophylla ssp. heterophylla – (Arkansas, Louisiana, Missouri, Texas)
  • O. heterophylla ssp. orientalis W.Dietr., P.H.Raven & W.L.Wagner 1983 – (AL, Arkansas)
• Oenothera rhombipetala Nutt. ex Torr. & A.Gray 1840

subsect. Emersonia

• Oenothera macrosceles A.Gray 1849 – (Chihuahuan Desert)^[2]
• Oenothera maysillesii Munz 1960 – (Durango)
• Oenothera organensis Munz 1938 – (New Mexico)
• Oenothera stubbei W.Dietr., P.H.Raven & W.L.Wagner 1978 – (Nuevo León)

subsect. Munzia

 series Allochroa

• Oenothera affinis Cambess. 1829 – (Bolivia, Brazil, Chile)
• Oenothera arequipensis Munz & I M.Johnst. 1925 – (Chile)
• Oenothera bahia-blancae W.Dietr. 1978 – (Argentina)
• Oenothera catharinensis Cambess. 1829 – (Brazil)
• Oenothera coquimbensis Gay 1847 – (Chile)
• Oenothera featherstonei Munz & I.M.Johnst. 1925 – (Peru)

• Oenothera indecora Cambess. 1830
  • O. indecora ssp. boliviensis W.Dietr. 1978
  • O. indecora ssp. bonariensis W.Dietr. 1978
  • O. indecora ssp. indecora

• Oenothera mendocinensis Gillies ex Hook. & Arn. 1833 – (Argentina)
• Oenothera mollissima L. 1753 – (Brazil)
• Oenothera montevidensis W.Dietr. 1978 – (Uruguay)
• Oenothera odorata Jacq. 1795 – (Argentina, Chile)

• Oenothera parodiana Munz 1933^[60]
  • O. parodiana ssp. brasiliensis W.Dietr. 1978 – (Argentina, Brazil, Uruguay)
  • O. parodiana ssp. parodiana – (Argentina)
  • O. parodiana ssp. strigulosa W.Dietr. 1978 – (Argentina)

• Oenothera picensis Phil. 1891^[61]
  • O. picensis ssp. bonariensis W.Dietr. 1978 – (Argentina)
  • O. picensis ssp. cordobensis W.Dietr. 1978 – (Argentina)
  • O. picensis ssp. picensis – (Chile)

• Oenothera ravenii W.Dietr. 1978 – (Argentina, Brazil, Chile, Uruguay)^[62]
  • O. ravenii ssp. argentinae W.Dietr. 1978 – (Argentina, Brazil)
  • O. ravenii ssp. chilensis W.Dietr. 1978 – (Chile)
  • O. ravenii ssp. ravenii – (Brazil)

• Oenothera stricta Ledeb. ex Link 1821^[63]
  • O. stricta ssp. altissima W.Dietr. 1978 – (Argentina)
  • O. stricta ssp. argentinae W.Dietr. 1978 – (Argentina)
  • O. stricta ssp. stricta – (Chile)

 series Clelandia

• Oenothera elongata Rusby 1893 – (Bolivia, Peru)
• Oenothera punae Kuntze 1898 – (Bolivia)
• Oenothera siambonensis W.Dietr. 1978 – (Argentina)
• Oenothera villaricae W.Dietr. 1978 – (Argentina, Chile)

 series Renneria

• Oenothera longituba W.Dietr. 1978 – (Argentina)
• Oenothera nana Griseb. 1874 – (Argentina, Bolivia, Chile, Peru)
• Oenothera pedunculifolia W.Dietr. 1978 – (Argentina)
• Oenothera peruana W.Dietr. 1978 – (Chile, Peru)
• Oenothera sandiana Hassk. 1856 – (Chile, Ecuador)
• Oenothera santarii W.Dietr. 1978 – (Argentina)

• Oenothera scabra K.Krause 1905^[64]
  • O. scabra ssp. scabra – (Bolivia, Peru)
  • O. scabra ssp. ucrosensis W.Dietr. 1978 – (Peru)

• Oenothera tafiensis W.Dietr. 1978^[65]
  • O. tafiensis ssp. parviflora W.Dietr. 1978 – (Argentina)
  • O. tafiensis ssp. tafiensis – (Argentina)

• Oenothera tarijensis W.Dietr. 1978 – (Bolivia)
• Oenothera versicolor Lehm. 1855 – (Bolivia, Ecuador, Peru)

subsect. Nutantigemma

• Oenothera breedlovei W.Dietr. & W.L.Wagner 1987 - (Mexico)
• Oenothera pennellii Munz 1939 - (Mexico)

• Oenothera pubescens Willd. ex Spreng. 1825 – South American evening primrose (southwestern U.S to western South America)

• Oenothera tamrae W.Dietr. & W.L.Wagner 1987 - (Mexico)

subsect. Oenothera

• Oenothera argillicola Mack. 1904 – shale-barren evening primrose (MD, PA, VA, WV)^[66]

• Oenothera biennis L. 1753 – common evening primrose (North America)

• Oenothera elata Kunth 1823 – Hooker's evening primrose (western North America)
  • O. elata ssp. elata – (Mexico, Central America)
  • O. elata ssp. hirsutissima (A.Gray ex S.Watson) W.Dietr. 1983 – (western U.S.)
  • O. elata ssp. hookeri (Torr. & A.Gray) W.Dietr. & W.L.Wagner 1987
  • O. elata ssp. texensis W.Dietr. & W.L.Wagner 1987 – (Texas)

• Oenothera glazioviana Micheli 1875 – red-sepal evening primrose (North America)^[67]

• Oenothera grandiflora L’Hér. 1789 – large-flower evening primrose (eastern North America)

• Oenothera jamesii Torr. & A.Gray 1840 – trumpet evening primrose (Mexico, KS, OK, TX)^[68]

• Oenothera longissima Rydb. 1913 – long-stem evening primrose (southwestern North America)

• Oenothera nutans G.F.Atk. & Bartlett 1913 – nodding evening primrose (eastern North America)^[69]

• Oenothera oakesiana (A.Gray) J.W.Robbins ex S.Watson 1890 – Oakes' evening primrose (eastern North America)^[70]

• Oenothera parviflora L. – northern evening primrose (North America)

• Oenothera villosa Thunb. 1794 – hairy evening primrose (North America)
  • O. villosa ssp. strigosa (Rydb.) W. Dietr. & P.H. Raven 1977
  • O. villosa ssp. villosa

• Oenothera wolfii (Munz) P.H.Raven W.Dietr. & Stubbe 1980 – Wolf's evening primrose (California)

subsect. Raimannia

• Oenothera drummondii Hook. 1834 – beach evening primrose^[71]
  • O. drummondii ssp. drummondii – (Atlantic coast, North Carolina to Mexico)
  • O. drummondii ssp. thalassaphila (Brandegee) W.Dietr. & W.L.Wagner 1987 – (southern Baja California coast)

• Oenothera falfurriae W.Dietr. & W.L.Wagner 1987 – royal evening primrose (southeastern Texas)^[72]

• Oenothera grandis (Britton) Smyth 1899 – showy evening primrose (U.S. & Mexico)

• Oenothera humifusa Nutt. 1818 – sea-beach evening primrose (southeast U.S.)

• Oenothera laciniata Hill 1767 – cutleaf evening primrose (North & South America)
  • O. laciniata ssp. laciniata
  • O. laciniata ssp. pubescens (Willd. ex Spreng.) Munz 1965 – (Ecuador)^[73]

• Oenothera mexicana Spach 1835 – Mexican evening primrose (southeastern Texas)^[74]

Section Pachylophus

Oenothera sect. Pachylophus (Spach) W.L.Wagner 2005 – western North America.

• Oenothera brandegeei (Munz) P.H.Raven 1970 – (near Bahia de los Angeles)^[75]

• Oenothera cavernae Munz 1941 – cave-dwelling evening primrose (AZ, NV, UT)

• Oenothera cespitosa Nutt.1813
  • O. cespitosa ssp. cespitosa – tufted evening primrose (western North America)
  • O. cespitosa ssp. crinita (Rydb.) Munz 1965 – tufted evening primrose (southwest North America)
  • O. cespitosa ssp. macroglottis (Rydb.) W.L.Wagner, Stockh. & W.M.Klein 1983 – tufted evening primrose (CO, NM, UT, WY)
  • O. cespitosa ssp. marginata (Nutt. ex Hook. & Arn.) Munz 1965 – tufted evening primrose
  • O. cespitosa ssp. navajoensis W.L.Wagner, Stockh, & W.M.Klein 1985 – Navajo evening primrose (AZ, NM, NV, UT)

• Oenothera harringtonii W.L.Wagner, Stockh. & W.M.Klein 1983 – Colorado Springs evening primrose (Colorado)

• Oenothera psammophila (A.Nels. & J.F.Macbr.) W.L.Wagner, Stockh. & W.M.Klein 1985 – St. Anthony Dunes evening primrose (Idaho)

Section Paradoxus

Oenothera sect. Paradoxus W. L. Wagner 1984 – distribution within the Chihuahuan Desert.^[76]

• Oenothera havardii S.Watson 1885 − Havard's evening primrose (Arizona, Texas)

Section Peniophyllum

Oenothera sect. Peniophyllum (Pennell) Munz 1937 – The single species is found in the southeastern U.S.

• Oenothera linifolia Nutt. 1821 – thread-leaf evening primrose^[77]

Section Ravenia

Oenothera sect. Ravenia W.L.Wagner 1986 – within Mexico.^[78]

• Oenothera muelleri Munz 1937 – (northeast Mexico)

• Oenothera riskindii W.L.Wagner 2005 – (Coahuila)

• Oenothera tubifera Ser. 1828^[79]
  • O. tubifera ssp. macrocarpa W.L.Wagner 2005 – (Durango)
  • O. tubifera ssp. tubifera

Section Xanthocoryne

Oenothera sect. Xanthocoryne W.L.Wagner & Hoch 2007 – from central Mexico to northern South America.^[80]

• Oenothera epilobiifolia Kunth 1823 – (Colombia, Mexico)
  • O. epilobiifolia ssp. cuprea (Schlecht.) P.H.Raven & D.R.Parn. 1970
  • O. epilobiifolia ssp. epilobiifolia – (Venezuela)

• Oenothera multicaulis Ruíz & Pav. 1802 – (South America)

• Oenothera seifrizii Munz 1937 – (Colombia, Venezuela)

References

1. Oenothera USDA Germplasm Resources Information Network (GRIN) 2011-12-07
2. Oenothera Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-07
3. Onagraceae Wagner,W.L et al. Revised Classification of the Onagraceae (2007)
4. O. arizonica, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-07
5. O. engelmannii, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-07
6. O. neomexicana, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-07
7. O. nuttallii, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-07
8. O. pallida, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-07
9. O. pallida ssp. gypsophila, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-09
10. O. wigginsii North Carolina State University Herbarium 2011-12-07
11. O. berlandieri University of Arizona Pima County Cooperative Extension. 2011-12-07
12. O. serrulata, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-07
13. O. hartwegii, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-07
14. O. lavandulifolia, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-07
15. O. toumeyi, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-07
16. O. tubicula, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-07
17. O. xylocarpa Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-07
18. O. sect. Eremia Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-06
19. O. primiveris ssp. bufonis Calflora: Information on California plants for education, research and conservation 2011-12-09
20. Common Names The Integrated Taxonomic Information System (ITIS) 2011-12-13
21. O. sect. Gaura USDA Germplasm Resources Information Network (GRIN) 2011-12-09
22. O. filiformis University of Michigan Herbarium. 2011-12-07
23. O. curtiflora USDA Germplasm Resources Information Network (GRIN) 2011-12-08
24. O. cinerea USDA Germplasm Resources Information Network (GRIN) 2022-12-09
25. O. sinuosa USDA Germplasm Resources Information Network (GRIN) 2022-12-09
26. O. sect. Gauropsis Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-09
27. O. canescens, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-07
28. O. sect. Hartmannia Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-09
29. O. deserticola Tropicos.org. Missouri Botanical Garden. 2011-12-09
30. O. platanorum, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-09
31. O. texensis, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-09
32. O. sect. Kleinia Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family 2011-12-09
33. O. albicaulis Tropicos.org. Missouri Botanical Garden 2011-12-09
34. O. coronopifolia Tropicos.org. Missouri Botanical Garden 2011-12-09
35. O. sect. Kneiffia Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family 2011-12-09
36. O. fruticosa Tropicos.org. Missouri Botanical Garden. 2011-12-09
37. O. perennis, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-07
38. O. perennis Tropicos.org. Missouri Botanical Garden. 2011-12-09
39. O. pilosella Prairie Wildflowers of Illinois 2011-12-08
40. O. pilosella, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-09
41. Richard Dwight Porcher & Douglas Alan Rayner: A guide to the wildflowers of South Carolina, p.292 (2001)
42. O. riparia Tropicos.org. Missouri Botanical Garden. 2011-12-11
43. O. spachiana Lady Bird Johnson Wildflower Center, Native Plant Database 2011-12-11
44. O. acaulis Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-07
45. O. centauriifolia Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family 2011-12-07
46. O. centaurifolia Tropicos.org. Missouri Botanical Garden 2011-12-09
47. O. acutissima, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-07
48. O. flava, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-07
49. O. triloba, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-07
50. O. dissecta Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family 2011-12-09
51. O. kunthiana Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family 2011-12-09
52. O. tetraptera Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family 2011-12-09
53. O. brachycarpa, USDA Natural Resources Conservation Service PLANTS Profile, 2010-12-09
54. O. howardii, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-09
55. O. macrocarpa Tropicos.org. Missouri Botanical Garden. 2011-12-09
56. O. macrocarpa, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-09
57. O. sect. Oenothera Wagner, W. L. and P. C. Hoch. 2005-. Onagraceae, The Evening Primrose Family 2011-12-08
58. O. clelandii Prairie Wildflowers of Illinois 2011-12-08
59. O. heterophylla, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-09
60. O. parodiana Tropicos.org. Missouri Botanical Garden. 2011-12-10
61. O. picensis Tropicos.org. Missouri Botanical Garden. 2011-12-10
62. O. ravenii Tropicos.org. Missouri Botanical Garden. 2011-12-10
63. O. stricta Tropicos.org. Missouri Botanical Garden. 2011-12-10
64. O. scabra Tropicos.org. Missouri Botanical Garden. 2011-12-10
65. O. tafiensis Tropicos.org. Missouri Botanical Garden. 2011-12-10
66. O. argillicola, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-10
67. O. glazioviana, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-10
68. O. jamesii, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-10
69. O. nutans, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-10
70. O. oakesiana, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-10
71. O. drummondii Wagner, W.L. and P.C. Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-10
72. O. falfurriae Wagner, W.L. and P.C. Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-10
73. O. laciniata ssp. pubescens Tropicos.org. Missouri Botanical Garden. 2011-12-10
74. O. mexicana Wagner,W.L. and P.C.Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-10
75. O. brandegeei Wagner,W.L. and P.C.Hoch. 2005-. Onagraceae, The Evening Primrose Family 2011-12-10
76. O. sect. Paradoxus Wagner,W.L. and P.C.Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-10
77. O linifolia, USDA Natural Resources Conservation Service PLANTS Profile, 2011-12-11
78. O. sect. Ravenia Wagner,W.L. and P.C.Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-10
79. O. tubifera Tropicos.org. Missouri Botanical Garden. 2011-12-10
80. O. sect. Xanthocoryne Wagner,W.L. and P.C.Hoch. 2005-. Onagraceae, The Evening Primrose Family. 2011-12-10